lib/focus.rb in ZenTest-4.8.3 vs lib/focus.rb in ZenTest-4.8.4

@@ -1,8 +1,9 @@
 class Module
   def focus *wanteds
     wanteds.map! { |m| m.to_s }
-    unwanteds = public_instance_methods(false).grep(/test_/) - wanteds
+    unwanteds = public_instance_methods(false).grep(/test_/).map(&:to_s)
+    unwanteds -= wanteds
     unwanteds.each do |unwanted|
       remove_method unwanted
     end
   end